Electrochromic device
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United States of America Patent
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Oct 4, 2005
Grant Date -
N/A
app pub date -
Mar 31, 2003
filing date -
Aug 29, 2002
priority date (Note) -
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Abstract
The present invention provides an electrochromic device in which a color during the coloring mode is gray. A lower ITO transparent electrode film 12 constituting a lower electrode film is formed on a transparent glass substrate 10. On the lower ITO transparent film 12, a nickel oxides film 32 constituting an oxidation coloring layer, a tantalum oxide film 16 constituting a solid-state electrolyte layer, a mixture film 34 of tungsten oxide and titanium oxide constituting a reduction coloring layer and an lower ITO transparent electrode film 20 constituting a upper electrode film are formed sequentially. The color during the coloring mode is gray and the color during the bleaching mode is achromatic.
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